<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>测试</title>
		<style type="text/css">
			div{
				width: 600px;
				height: 300px;
				margin: 100px auto;
				text-align: center;
				line-height: 300px;
				font-size: 30px;
				color: #fff;
				background-color: skyblue;
			}
		</style>
	</head>
	<body>
		<div>此网页只用于学习HTML+CSS</div>
	</body>
</html>
